Astronomers Now Have a Better Idea Where Planet 9 Isn’t

Nobody has found Planet Nine yet, but at least we've almost figured out where to look. Image: NASA

Efforts to find the alleged planet are still in the early phases, but Brown and Batygin just finished a major survey with the Zwicky Transient Facility (ZTF) telescope. They didn't find Planet 9, but now we know where not to look.